Homework 3
3. You collect data on parents and non-parents of children under two. You predict that parents will report less sleep than non-parents. Complete the following t-test procedures listed belowm the purpose of this t-test, make sure to use an alpha of .05 a. Create a research and null hypothesis for your prediction on parental status (non-parent I parent} and hours of sleep. b. Use the data to calculate an independent samples t-statistic: NonParent Parent of Child Under 2 171: 7.2 hours of sleep ?2 = 5.7 hours of sleep 521 = 4.0 522 = 1.0 N1 = 42 N2 = 40 c. Use Appendix C: Critical T-distribution to determine your critical value for t d. Based on your results, state whether your p-value is less than or greater than alpha of .05 e. State whether you accept or reject the null hypothesis and write a sentence that interprets your findings about whether or not parents get less sleep than non-parents. a. Create a research hypothesis and null hypothesis for level of health {poor, fair, good} and number of nights with poor sleep in the last 30 days. For this problem use an alpha of .01 Poor Health Fair Health Good Health 3|] 4 1 15 1 1D 1 4 15 2 2 15 E 2 3 N1=5 N2=5 N3=E 171=1? 171= 4 173= 2 51 = 16 52= 2.5 53= 1.4 521=5?.5 522=6.5 523=2 2V1 = 35 2V2 = 20 EYE 12 2y\"; = 1,6?5 23:22 = 106 2%: 34 {Grand Mean} 17: 3 Use the data to calculate an F-statistic For the ANDVA Use Appendix E: Critical fdistrihution to determine your critical 1value for f State whether your p-yalue is less than or greater than alpha saline State whether you accept or reject the null hypothesis and write a sentence that interprets your ndings on health and number of poor sleep nights. Cross-Tabulation and Chi-Square Section 1. A piano instructor suspects that their "Intro to Music Theory" course is most enjoyed by those who are new or "novice" to music. In this case, the instructor believes the independent variable is "experience level" and this affects the dependent variable which is "class enjoyment". They conduct a survey of their class to find out if this is true and their data is provided below. Convert the data into a cross-tabulation table and include column percentages. Experience Level Class Enjoyment Intermediate Mid Novice Mid Novice High Intermediate Low Advanced Low Intermediate Low Novice Mid Intermediate Mid Intermediate Low Intermediate High Advanced Mid Advanced High Novice Mid Novice High Advanced Mid Novice High Novice High Intermediate Low Novice Mid Novice Mic Advanced Mid Advanced Low Novice Low Intermediate Mid Advanced Low Intermediate Mid 2. Describe the major pattern between experience level and class enjoyment. Use the column percentages to support your answer. If applicable, state the direction of the relationship.3. Calculate the chi-square and determine significance at an alpha of .01 for the cross-tab you created. Make sure to: a. Create a research and null hypothesis b. Calculate the chi-square statistic c. Use appendix D Critical Chi-Square distribution to determine your critical chi-square. d. State whether your p-value is less than or greater than alpha e. State whether you reject the null hypothesis f. State whether there is a relationship between the two variables
